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VULNERABILITIES

CVE-2026-54399 Details

Description

Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://www.openwall.com/lists/oss-security/2026/07/01/4 CVEMailing ListThird Party Advisory
https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy [email protected]Mailing ListVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]
CWE-400Uncontrolled Resource Consumption[email protected]

Affected Products

ProductVersions
apache httpcomponents core
>= 5.0, <= 5.4.2
5.5 alpha1
5.5 beta1

CPE

  • cpe:2.3:a:apache:httpcomponents_core:*:*:*:*:*:*:*:*
  • cpe:2.3:a:apache:httpcomponents_core:5.5:alpha1:*:*:*:*:*:*
  • cpe:2.3:a:apache:httpcomponents_core:5.5:beta1:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-54399
NVD Published Date:
Jul 1, 2026
NVD Last Modified:
Jul 24, 2026
Source:
[email protected]
CVE-2026-54399 Details - Not Deferred